This question was a key one to be decided by the Nicene Council and it is still debated today. Many believe Christ gave us the age of grace, it did not exist before. At the same time, they say Christ is one with the Father.
Do you think Christ was begotten of the Father out of the Father’s own essence so Christ always was, as seems to be what we read in the gospel of John, or do you believe Christ was first born in Bethlehem?
On the truth of how Christ really is establishes the validity of the OT. Was Christ part of the sacrificial system?
The Bible says that grace and truth came by Jesus Christ.
There was grace in the Old Testament but only to benefit on earth, where the grace that Jesus gave is spiritual.
The Bible says Jesus has no beginning as God, so He could of not been begotten of the Father.
But the child Christ Jesus was begotten of the Father, and He is the only begotten Son of God for He is the only human to be conceived by the Spirit, where the saints are adopted in to the Kingdom.
Jesus is part of the sacrificial system, but animals only covered sins, where Jesus takes away sins completely.
The Bible says there is one God, and one mediator between God and men, the man Christ Jesus.
The man Christ Jesus is our Savior, for only a sinless man can reconcile the world unto God, but no man is sinless so God manifest Himself in flesh, and reconciled the world unto Himself in the person of Jesus Christ, God and man in harmony.
God's name reveals His character and blessings to mankind, which Jehovah represents physical deliverance, and physical blessings, and then God used compound names of Jehovah to reveal a different character of Him that was a blessing to people.
Jesus is a compound name of Jehovah, and represents spiritual salvation.
The name Jesus, and Christ, only refer to this creation, and not before it.
Which Jesus has a name that no person knows but Him.